I had a 23 hour carve on two sides. It stalled 85% through on the second side. that really had me pissed. But here is what I did.
Deleted the back side pattern so it will only carve the front side.
re-ran the carve and it just danced it the air for half a day, then picked up where it left off. Worked out fine.
Just make sure you give your system a once over before you restart encase you have other issues.
Carvewright A machine 2007
Carvewright C machine 2013 DC-Insert
Mavric iMac i7 16gig latest version
Designer 1.187, Designer 2.04, Centerline Text, Conforming Vectors, STL importer, DFX importer, Pattern Editor and probe